Journal ArticleDOI
Expanded Theory of H- and J-Molecular Aggregates: The Effects of Vibronic Coupling and Intermolecular Charge Transfer.
TLDR
This review outlines advances made in understanding the relationship between aggregate structure and photophysics when vibronic coupling and intermolecular charge transfer are incorporated.Abstract:
The electronic excited states of molecular aggregates and their photophysical signatures have long fascinated spectroscopists and theoreticians alike since the advent of Frenkel exciton theory almost 90 years ago. The influence of molecular packing on basic optical probes like absorption and photoluminescence was originally worked out by Kasha for aggregates dominated by Coulombic intermolecular interactions, eventually leading to the classification of J- and H-aggregates. This review outlines advances made in understanding the relationship between aggregate structure and photophysics when vibronic coupling and intermolecular charge transfer are incorporated. An assortment of packing geometries is considered from the humble molecular dimer to more exotic structures including linear and bent aggregates, two-dimensional herringbone and “HJ” aggregates, and chiral aggregates. The interplay between long-range Coulomb coupling and short-range charge-transfer-mediated coupling strongly depends on the aggregate ...read more
Citations
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Journal ArticleDOI
Photoinduced Architectural Transformation of Noncovalent Fluorescent Photochromic Organic Nanoparticles as Evidenced by Amplified Fluorescence Photoswitching
Thibault Gallavardin,Andrea Mulas,Lucie Norel,Stéphane Rigaut,Arnaud Brosseau,Rémi Métivier,Eléna Ishow +6 more
TL;DR: In this article, photoinduced morphological changes provide attractive prospects in the fabrication of smart drug delivery systems where active material release by external stimuli represents a very dynamic research area. But they are not suitable for use in medical applications.
Journal ArticleDOI
Covalent post-assembly modification of π-conjugated supramolecular polymers delivers structurally robust light-harvesting nanoscale objects.
Victor Paulino,Kaixuan Liu,Valentino Cesiliano,Ifigeneia Tsironi,Arindam Mukhopadhyay,Maria Kaufman,Jean Hubert Olivier +6 more
TL;DR: In this paper , a two-component stapling strategy is used to covalently tether a new class of water-soluble supramolecular polymers built from bay-functionalized perylene bisimide (PBI) units.
Journal ArticleDOI
Singlet Fission in Colloidal Nanoparticles of Amphipathic Diketopyrrolopyrrole Derivatives: Probing the Role of the Charge Transfer State.
TL;DR: In this article , the role of the charge transfer (CT) state in the singlet fission (SF) process was evaluated in three 3,6-bis(thiophen-2-yl)diketopyrrolopyrrole (TDPP) derivatives with zero (Ph2TTPP), one (ph2TDPM-COOH), and two (Ph 2TDPMPP-(cOOH)2) carboxylic groups, respectively.
Journal ArticleDOI
Divinylanthracene-Containing Tetracationic Organic Cyclophane with Near-Infrared Photoluminescence.
Arthur H. G. David,Amine Garci,Seifallah Abid,Xuesong Li,Ryan M. Young,James W. Seale,Jessica E. Hornick,Chandra S. Azad,Yang Jiao,Indranil Roy,Isil Akpinar,Tanay Kesharwani,Charlotte L. Stern,Michael R. Wasielewski,J. Fraser Stoddart +14 more
TL;DR: In this article , a tetracationic cyclophane was used as a probe for live-cell imaging in a breast cancer cell line (MCF-7) using near-infrared (NIR) light.
Journal ArticleDOI
1,7‐diazaperylene in Organic Field Effect Transistors
Cigdem Yumusak,Felix Mayr,Dominik Wielend,Bilgen Kahraman,Yasin Kanbur,Heinz Langhals,Mihai Irimia-Vladu +6 more
TL;DR: In this paper , a thorough material characterization of 1,7-diazaperylene via multiple investigation techniques (cyclic voltammetry, photoluminescence, photoline excitation, impedance spectroscopy) was performed to understand its applicability in organic electronic devices.
References
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Journal ArticleDOI
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Journal ArticleDOI
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